Slide fastener element



March 19, 1940. J. M. GROSS SLIDE FASTENER ELEMENT Filed Ndv. 2, 195a 2v INVENTOR.

ATTORNEY.

Patented M. 19, 1940 2,193,870 sLmE FASTENER ELEMENT v Joseph M. Gross,Rockville Centre, N. Y., assignor to-Ideal Fastener Corporation,Brooklyn, N. Y., a corporation of New York Application November 2, 1938,Serial No. 238,333-

13 Claims. (Cl. 24-205) This invention relates to improvements in slidefasteners, being particularly directed to the formation of theinterlocking members or scoops thereof.

Broadly, it is an object of this invention to provide for scoops appliedin slide fastener assemblies, wherein the male meshing portion thereofconsists of a projecting freely rotatable member.

Specifically, it is an object of this invention to provide for a scoopformation in a slide fastener assembly, wherein the head of each scoophas on one side a recess and on the other a freely rotatable ballelement, the ball element of one scoop being cooperative with the recessof an adjacent opposing scoop for interlocking.

These and other advantages, capabilities and features of the inventionwill appear from the subjoined detailed description of one specificembodiment thereof illustrated in the accompanying drawing, in whichFigure 1 is a perspective view of a slide fastener assemblyincorporating the slide fastener element. j v

Figure 2 is an enlarged plan view partly in section showing theconstruction of the individual elements and their assembly on stringers.

Figure 3 is a front elevation in section taken along lines 3-3 of Figure2 showing a plurality of cooperating fastener elements.

Figure 4 is an end elevation in section taken along lines 4-4 ofFigure'2.

Figure 5 is a plan view in perspective showing the construction of anindividual fastener element.

Referring to the reference characters in the drawing, numeral lrepresents a conventional slider operatively assembled with respect tostringers Ila and lib, consisting of scoops I2 spacedly mounted onbeaded tapes I3, through the clamping of the jaws ll of the scoops ontothe beads l of the tapes.

Referring particularly to Figures 2- to 5 of the drawing, the scoops I2,which may be formed by die casting or stamping, are shaped in thepreferred embodiment shown, to provide spaced jaws ll and a head l6.

The head is shaped to provide a plurality of hemispherical cavities l1and I8 extending inwardly from the opposing faces I! and 20 of thescoop,cavities H and I8 being hereinafter described as the male and femalecavities respectively, such cavities being merged into an open necksubstantially centrally of the depth of the scoop.

In the preferred embodiment here shown, the interior of the head isshaped to provide a substantially circular inwardly extending ridge 2iat the open neck carrying a sloping circular shoulder 22 in the malecavity 11.

The face IQ of the scoop adjoining the male cavity I1 is shaped toprovide cut out segments 23a and 23b along its sides, and upstandingears 24a and 24b at opposite ends of the head.

The male meshing element 25 of the scoop consists of a spherical member,as, for example. a ball bearing which is inserted into the male cavityI'I so that it rests on the shoulder 22 thereof- To maintain the ballwithin the male cavity H, the ears 24a. and 24b are swaged inwardly andarcuately towards the center of the cavity and above the center line ofthe ball, until the inner faces 26 thereof are spaced onlyinfinitesimally distant from the surface of the ball 25.

The ball 25 in such mounting in cavity Il may be freely rotatable aboutany axis, and has a projecting portion of sufficient stock to restwithin and substantially fill the female cavity l8 of a next adjacentscoop carried on an opposing stringer.

As indicated in Figures 2 and 4 of the drawing, the scoops ofcooperating opposing stringers are spaced through the clamping of thejaws of the same upon the tapes, so as to provide a meshing 30 andinterlocking and unmeshing and separationof alternate scoops, by thepassage of such scoops within the channels of the slider as the latterreciprocates.

Although in the embodiment herein shown and described the ball 25 isinserted into a. defined male cavity and set'in operative position byswaging the cars at the male face, itis within the province of theinvention to initially form the male and female cavities as a continuoustubu-' 4o lar cavity, with the ears 24a. and 24b in position extendingover the male cavity IT as heretofore; thereafter, dropping the ball 25into the bead through the female face 20, and the female cavity portion,and then swa ging the interior of thecavity from the female face of thescoop to form the ridge 2i and shoulder 22, for supporting the tionwithout departing from the general spiritof the invention as set'forthin the appended claims. t

I claim:

In a slide fastener, an interlocking member having, on one of its axes arecess on one side and a relatively movable element projecting from theopposing side.

2. In a slide fastener, an interlocking member having on one of its axesa recess on one side and a relatively rotatable element projecting fromthe opposing side.

3. In a slide fastener, an interlocking member having on one of its axesrecesses on opposing sides, and a relatively movable element mounted inand projecting from one of the recesses.

4. In a slide fastener, an interlocking member having on one of its axesrecesses on opposing sides, and a relatively rotatable element mountedin and projecting from one of the recesses.

5. In a slide fastener, a series of similar inter locking members, eachmember having on one of its axes a recess on one side and a relativelyrotatable element projecting from the opposing side, the projectingrotatable element of one member being accommodated for cooperation with'the recess of another member.

6. In a slide fastener, an interlocking member having on one of its axesa recess extending therethrough from side to side, a shoulder formedintermediate of the recess, and a rotatable element carried in therecess and projecting from one side of the interlocking member.

7. In a slide fastener, an interlocking member having a recess extendingtherethrough from side to side on one of its axes, a shoulder formedintermediate of the recess, and a rotatable element carried in therecess and projecting from one side of the interlocking member, and astop on the last named side of said interlocking member for maintainingthe rotatable element within the recess.

8. In a slide fastener, an interlocking member having a recess extendingtherethrough from side to side on one of its axes, a rotatable elementcarried in said recess and projecting from one side of said interlockingmember, and means intermediate of said recess and at the side of theinterlocking member from which the rotatable element projects forsupporting the element for rotation within said recess.

9. In a slide fastener, an interlocking member having on one of its axeshemi-spherical recesses on each side, and a rotatable element mountedwithin one of the recesses. and projecting beyond the side on which suchrecess is formed.

10. In a slide fastener, an interlocking member having on one of itsaxes hemi-spherical recesses on each side, and a relatively movablespherical element mounted within one of the recesses and projectingbeyond the side on which such recess is formed. 1

11. In a slide fastener, an interlocking member having clamping jaws anda head, the head having on opposing faces thereof, respectively a recessand a relatively movable projecting element.

12. In a slide fastener, an interlocking mem ber having clamping jawsand a head, male and female elements on opposing faces of said head, thefemale element comprisinga recess and the male element comprising arelatively movable projecting element. v

13. In a slide fastener assembly, a plurality of opposinginterlocking-members adapted to be controlled by a slider, each memberhaving .head and jaw portions, opposing tapes extending within the jawsof opposing interlocking members for mounting the same, there beingprovided on opposing sides with respect to one of the axes of said head,respectively, a recess on one side and a relatively movable projectingelement on the other, the movable projecting element of one member beingadapted to cooperate with a recess of the next adjacent and opposinginterlocking member.

JOSEPH M. GROSS.

